Results 11 to 20 of about 85,923 (261)

Density-Dependent Plant–Plant Interactions Triggered by Grazing [PDF]

open access: yesFrontiers in Plant Science, 2019
Plant species performance in rangelands highly depends on the effect of grazing and also on the occurrence of unpalatable benefactor species that can act as biotic refuges protecting neighboring plants from herbivores.
András Kelemen   +10 more
doaj   +5 more sources

Plant Density Estimation Using UAV Imagery and Deep Learning

open access: yesRemote Sensing, 2022
Plant density is a significant variable in crop growth. Plant density estimation by combining unmanned aerial vehicles (UAVs) and deep learning algorithms is a well-established procedure.
Jinbang Peng   +6 more
doaj   +3 more sources

Nitrogen and Plant Density Effects on Sorghum

open access: yesJournal of Agronomy, 2008
The aim of this study was to evaluate the effect of nitrogen and plant density on some morphological and agronomic characteristics of grain sorghum in the years 2001-2002. Experimental design was a split-split, randomized complete block with three replications. Three nitrogen levels (0, 75 and 150 kg ha-1) and plant densities (70x10, 70x20 and 70x30 cm)
Guler, Mustafa   +4 more
openaire   +2 more sources

Dividing the pie: A quantitative review on plant density responses [PDF]

open access: yes, 2021
Plant population density is an important variable in agronomy and forestry and offers an experimental way to better understand plant-plant competition.
Nord, Eric A.   +11 more
core   +2 more sources

Plant energetics and population density” [PDF]

open access: yesNature, 1999
Enquist et al. 1 present an interesting analysis of the link between plant size, allometry and mortality. But I believe that their claim that it has a functional basis is misleading when it is scaled up to whole populations.
Brian J. Enquist   +2 more
  +5 more sources

Determination of Plant Densities [PDF]

open access: yesNature, 1948
E. J. MACHIN1 appears to be unaware of the extensive study by G. E. Blackman2 on the relation between plant density and percentage absence. In a theoretical appendix to this paper, I have pointed out that the most efficient size of quadrat corresponds to about 20 per cent absence, or a product of quadrat size and plant density of about 1·6 (the ...
openaire   +3 more sources

BILOLOGICAL STUDY OF JOHNSONGRASS (Sorghum halepense L.) RHIZOMES [PDF]

open access: yesMesopotamia Journal of Agriculture, 2017
The experiment was conducted out under the conditions of the greenhouse at the Field of Crop Science, Mosul University on 2012. The aim of the research is to study the effect of length and diameter of Johnsongrass rhizomes planted at different densities ...
T. Al-Hially
doaj   +1 more source

Effect of Spatial-Temporal Light Competition on Cotton Yield and Yield Distribution

open access: yesAgronomy, 2021
The photosynthetically active radiation (PAR) of crop canopy is highly related to yield formation, but how it relates to yield and yield distribution is not well understood.
Qingru Wang   +13 more
doaj   +1 more source

Induction of Resistance Against Plutella xylostella (L.) (Lep.: Plutellidae) by Jasmonic Acid and Mealy Cabbage Aphid Feeding in Brassica napus L.

open access: yesFrontiers in Physiology, 2018
The diamondback moth, Plutella xylostella (L.), has become the most destructive insect pest of cruciferous plants, such as B. napus throughout the world including Iran.
Gadir Nouri-Ganbalani   +3 more
doaj   +1 more source

The Optimal Cultivar × Sowing Date × Plant Density for Grain Yield and Resource Use Efficiency of Summer Maize in the Northern Huang–Huai–Hai Plain of China

open access: yesAgriculture, 2021
In order to explore the optimal cultivar × sowing date × plant density for summer maize (Zea mays L.) in the Northern Huang–Huai–Hai (HHH) Plain of China, field experiments were conducted over two consecutive years (2018–2019) on a loam soil in the ...
Lichao Zhai   +8 more
doaj   +1 more source

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